package com.huage_03;

public class StringTest04 {
    public static void main(String[] args) {
        int[] arr = {1,2,3};

        String s = arrayToString(arr);
        System.out.println("s = " + s);
    }
    //将数组内容按指定规则返回
    /*
        返回类型:String
        传参值：int[] arr
     */
    public static String arrayToString(int[] arr){
        String s ="";

        s+="[";
        //遍历数组，进行拼接
        for(int i=0;i<arr.length;i++){
            if(i==arr.length-1){
                s+=arr[i];
            }else {
                s+=arr[i]+",";
            }
        }
        s+="]";

        return s;
    }
}
